Home / 13,929.63-19,222.41-7,961.85

Finding the Fourth Proportional to 13,929.63, 19,222.41 and 7,961.85

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Solution

The fourth proportional to 13,929.63, 19,222.41 and 7,961.85 is: 10,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.63 : 19,222.41 = 7,961.85 : x
  2. Step 2: Convert to fraction form
    13,929.63/19,222.41 = 7,961.85/x
  3. Step 3: Cross multiply
    13,929.63x = 19,222.41 × 7,961.85
  4. Step 4: Simplify right side
    13,929.63x = 153,045,945.06
  5. Step 5: Solve for x
    x = 153,045,945.06/13,929.63
  6. Step 6: Final answer
    x = 10,987.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.